I am new in English so excuse my language but i have worked on OpenGL for little bit but new in texture mapping i have the code from the site of Nehe i think i understand it but how do i load file from bitmap instead file they have. THIS THERE CODE(SEE BETTER QUESTION OF PROBLEM BELOW) #include <stdio.h> #include <windows.h> #include <gl/glut.h> #define TEXTURES_NUM 1 #define CUBE_TEX 0 typedef struct _RGBIMG { GLuint w; // Image's Width GLuint h; // Image's Height GLubyte* data; // Image's Data (Pixels) } RGBIMG; // Global Variables bool g_gamemode; bool g_fullscreen GLfloat g_xrot = 0.0f; GLfloat g_yrot = 0.0f; GLfloat g_zrot = 0.0f; GLuint g_texid[TEXTURES_NUM]; bool load_rgb_image(const char* file_name, int w, int h, RGBIMG* refimg) { GLuint sz; // Our Image's Data Field Length In Bytes FILE* file; // The Image's File On Disk long fsize; // File Size In Bytes GLubyte* p; // Helper Pointer // Update The Image's Fields refimg->w = (GLuint) w; refimg->h = (GLuint) h; sz = (((3*refimg->w+3)>>2)<<2)*refimg->h; refimg->data = new GLubyte [sz]; if (refimg->data == NULL) return false; // Open The File And Read The Pixels file = fopen(file_name , "rb"); if (!file) return false; fseek(file, 0L, SEEK_END); fsize = ftell(file); if (fsize != (long)sz) { fclose(file); return false; } fseek(file, 0L, SEEK_SET); p = refimg->data; while (fsize > 0) { fread(p, 1, 1, file); p++; fsize--; } fclose(file); return true; } bool setup_textures() { RGBIMG img; // Create The Textures' Id List glGenTextures(TEXTURES_NUM, g_texid); // Load The Image From A Disk File if (!load_rgb_image("swirl_256x256.raw", 256, 256, &img)) return false; // Typical Texture Generation Using Data From The Image glBindTexture(GL_TEXTURE_2D, g_texid[CUBE_TEX]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, 3, img.w, img.h, 0, GL_RGB, GL_UNSIGNED_BYTE, img.data); // Finished With Our Image, Free The Allocated Data delete img.data; return true; } bool init(void) { glShadeModel(GL_SMOOTH); glClearColor(0.0f, 0.0f, 0.0f, 0.5f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); if (!setup_textures()) return false; glEnable(GL_TEXTURE_2D); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glEnable(GL_CULL_FACE); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); return true; } void render(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glTranslatef(0.0f,0.0f,-5.0f); glRotatef(g_xrot,1.0f,0.0f,0.0f); glRotatef(g_yrot,0.0f,1.0f,0.0f); glRotatef(g_zrot,0.0f,0.0f,1.0f); glBindTexture(GL_TEXTURE_2D, g_texid[CUBE_TEX]); glBegin(GL_QUADS); // Front Face glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Back Face glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Top Face glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Bottom Face glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Right face glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Left Face glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glEnd(); g_xrot += 0.3f; g_yrot += 0.2f; g_zrot += 0.4f; glutSwapBuffers ( ); } void reshape(int w, int h) { glViewport(0, 0, w, h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if (h == 0) h = 1; gluPerspective(80, (float)w/(float)h, 1.0, 5000.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); // Reset The Modelview Matrix } void keyboard(unsigned char key, int x, int y) { switch (key) { case 27: exit(0); break; default: break; } } void special_keys(int a_keys, int x, int y) { switch (a_keys) { case GLUT_KEY_F1: if (!g_gamemode) { g_fullscreen = !g_fullscreen; if (g_fullscreen) glutFullScreen(); else glutReshapeWindow(500, 500); } break; default: break; } } void ask_gamemode() { int answer; answer = MessageBox(NULL, "Do you want to enter game mode?", "Question", MB_ICONQUESTION | MB_YESNO); g_gamemode = (answer == IDYES); g_fullscreen = false; } int main(int argc, char** argv){ ask_gamemode(); glutInit(&argc, argv); glutInitDisplayMode(GLUT_DEPTH | GLUT_RGB | GLUT_DOUBLE); if (g_gamemode) { glutGameModeString("640x480:16"); if (glutGameModeGet(GLUT_GAME_MODE_POSSIBLE)) glutEnterGameMode(); else g_gamemode = false; } if (!g_gamemode) { glutInitWindowSize(500, 500); glutCreateWindow("NeHe's OpenGL Framework"); } if (!init()) { MessageBox(NULL,"Cannot initialize textures.","Error",MB_ICONSTOP); return -1; } glutDisplayFunc(render); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutSpecialFunc(special_keys); glutIdleFunc(render); glutMainLoop(); return 0; } HERE WHAT I WANT TO DO HOW DO I LOAD THE FILE IF I NOT USE load_rgb_image IS THERE NO CALL I CAN USE SUCH "LOADTEXTURE" or SIMILIAR #include <stdio.h> #include <windows.h> #include <gl/glut.h> #define TEXTURES_NUM 1 #define CUBE_TEX 0 typedef struct _RGBIMG { GLuint w; // Image's Width GLuint h; // Image's Height GLubyte* data; // Image's Data (Pixels) } RGBIMG; // Global Variables bool g_gamemode; bool g_fullscreen GLfloat g_xrot = 0.0f; GLfloat g_yrot = 0.0f; GLfloat g_zrot = 0.0f; GLuint g_texid[TEXTURES_NUM]; bool setup_textures() { RGBIMG img; // Create The Textures' Id List glGenTextures(TEXTURES_NUM, g_texid); // Load The Image From A Disk File if (!load_rgb_image("swirl_256x256.raw", 256, 256, &img)) return false; // Typical Texture Generation Using Data From The Image glBindTexture(GL_TEXTURE_2D, g_texid[CUBE_TEX]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, 3, img.w, img.h, 0, GL_RGB, GL_UNSIGNED_BYTE, img.data); // Finished With Our Image, Free The Allocated Data delete img.data; return true; } bool init(void) { glShadeModel(GL_SMOOTH); glClearColor(0.0f, 0.0f, 0.0f, 0.5f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); if (!setup_textures()) return false; glEnable(GL_TEXTURE_2D); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glEnable(GL_CULL_FACE); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); return true; } void render(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glTranslatef(0.0f,0.0f,-5.0f); glRotatef(g_xrot,1.0f,0.0f,0.0f); glRotatef(g_yrot,0.0f,1.0f,0.0f); glRotatef(g_zrot,0.0f,0.0f,1.0f); glBindTexture(GL_TEXTURE_2D, g_texid[CUBE_TEX]); glBegin(GL_QUADS); // Front Face glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Back Face glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Top Face glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Bottom Face glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Right face glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Left Face glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); glEnd(); g_xrot += 0.3f; g_yrot += 0.2f; g_zrot += 0.4f; glutSwapBuffers ( ); } void reshape(int w, int h) { glViewport(0, 0, w, h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if (h == 0) h = 1; gluPerspective(80, (float)w/(float)h, 1.0, 5000.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); // Reset The Modelview Matrix } void keyboard(unsigned char key, int x, int y) { switch (key) { case 27: exit(0); break; default: break; } } void special_keys(int a_keys, int x, int y) { switch (a_keys) { case GLUT_KEY_F1: if (!g_gamemode) { g_fullscreen = !g_fullscreen; if (g_fullscreen) glutFullScreen(); else glutReshapeWindow(500, 500); } break; default: break; } } void ask_gamemode() { int answer; answer = MessageBox(NULL, "Do you want to enter game mode?", "Question", MB_ICONQUESTION | MB_YESNO); g_gamemode = (answer == IDYES); g_fullscreen = false; } int main(int argc, char** argv){ ask_gamemode(); glutInit(&argc, argv); glutInitDisplayMode(GLUT_DEPTH | GLUT_RGB | GLUT_DOUBLE); if (g_gamemode) { glutGameModeString("640x480:16"); if (glutGameModeGet(GLUT_GAME_MODE_POSSIBLE)) glutEnterGameMode(); else g_gamemode = false; } if (!g_gamemode) { glutInitWindowSize(500, 500); glutCreateWindow("NeHe's OpenGL Framework"); } if (!init()) { MessageBox(NULL,"Cannot initialize textures.","Error",MB_ICONSTOP); return -1; } glutDisplayFunc(render); glutReshapeFunc(reshape); glutKeyboardFunc(keyboard); glutSpecialFunc(special_keys); glutIdleFunc(render); glutMainLoop(); return 0; } Much appreciation

I was also wondering about that myself how do you put code into a source tags


Sorry(this doesn't pertain to the topic)